Agilent Technologies e4419b, e4418b manual Removing the A3 Front Panel Assembly

Replaceable Parts

Assembly and Disassembly Guidelines

Removing the A3 Front Panel Assembly

1.Disconnect the following cables from the A2 processor assembly:

n power reference semi-rigid (When replacing use the torques detailed on page 5-18.)

n

n

front panel keypad

front panel LCD

Note	Care should be taken when disconnecting the front panel keyboard and LCD.
	Move the A2 plastic support bracket to its forward position using the two
	side levers, unclip the flexi-cable retaining bar on the front panel keypad and
	front panel LCD cable connectors and disconnect the cable.

2.Disconnect the flex circuit from the measurement assembly.

Note	Care should be taken when disconnecting the flex circuit from the
	measurement assembly.

The flex circuit assembly is released by pushing the connector tab forward and lifting.

To replace the flex circuit, loop it as shown on page 5-17, and connect the flex circuit as shown in the figures on page 5-12.

3.Remove the center screw from the right hand side of the front panel.

4.Remove the front panel by pressing in the metal tab on the front panel as shown and push down on the side of the chassis until the standoffs are cleared from the holes.

screw

	tab
Note	After replacing a front panel assembly, the display brightness and contrast
	must be adjusted. Refer to Chapter 3 “Adjustments”.

Agilent E4418B/E4419B Service Guide 5-15